Grading Guide

2 of 3AP-PP-MP-PF 0223 Application Chart (EN)
Viega Approved Applications Tech Data
Media
1
System Operating Conditions
Product Line, Material, and Sealing Element
2
ProPress
MegaPress
Stainless
ProPress and
MegaPress Stainless
MegaPress MegaPressG
Copper 304 316 Carbon Steel
Comments
Max Pressure
(psig)
Temperature
Range (°F)
EPDM FKM HNBR FKM EPDM FKM EPDM FKM HNBR
Gases
Compressed Air
Oil Concentration ≤25 mg/m
3
200
Max 140°
✓ ✓ ✓ ✓ ✓ ✓ ✓
4
✓
4
✓
4
Oil Concentration >25 mg/m
3
✓ ✓ ✓ ✓ ✓
4
✓
4
Nitrogen - N
2
✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Carbon Dioxide - CO
2
Dry ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Carbon Monoxide - CO ✓ ✓ ✓
Argon - Ar ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Ammonia
Anhydrous
Max 120°
✓
Ammonia environment
7
✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Oxygen - O
2
Non-medical
Keep free of oil and grease
140
Max 140°
✓ ✓ ✓
Hydrogen - H
2
125 ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Acetylene Test pressure 350 psi 20 Ambient
5
✓ ✓ ✓ ✓ ✓ ✓
Vacuum
Minimum absolute pressure
Maximum di󶈴erential pressure
750µm Hg
29.2" Hg
Max 160° ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
Special Media
Methanol
200
75° ✓
Latex Paint 32° to 250° ✓ ✓
Urea Solution Concentration ≤40%
140
100° ✓
Caustic Soda Concentration ≤50% 140° ✓
Acetone Liquid 70 -14° to 104° ✓ ✓
1
It is recommended that all systems be clearly labeled with the media being conveyed. For further information please consult Viega Technical Services.
2
All Viega systems must be used with the manufacturer's recommended sealing element. Contact your local Viega representative or Viega Technical Services for speci󶈵c application temperature,
pressure, and concentration limits.
3
System pressure and temperature ranges depend on sealing element. Any ranges listed above will be overruled by the sealing element limits here:
3a
EPDM temperature ranges are typically 0°F to 250°F.
3b
FKM temperature ranges are typically 14°F to 284°F with temperature spikes (24 hours) up to 356°F.
3c
HNBR temperature ranges are typically -40°F to 180°F.
4
System must contain adequate condensate drainage.
5
Ambient temperatures should be taken as normal operating conditions for the applications not to exceed sealing element limitations.
6
Compliant with CSA 6.32 / ANSI LC-4.
7
All copper or copper alloy components that are exposed in ammonia environments require lacquer or paint coating.
8
HNBR sealing elements are not recommended for silicone based oils.
9
It is a Viega engineering best practice that for heating applications using EPDM, where the media will be running continuously, non-stop at 200°F or above, to consider switching to an FKM sealing element.
10
MegaPressG 󶈵ttings with HNBR sealing elements are compliant with standard UL 180 for combustible liquid applications.
11
Tubing with oxygen barrier should be used for systems with ferrous components.
Viega ProPress and MegaPress systems are
approved for over 2,500 applications. For
information on additional applications to those
listed, please contact [e-mail].